Install strongswan-nm by entering the following commands in the terminal:
sudo apt update sudo apt install strongswan-nm
Description:
strongSwan plugin to interact with NetworkManager
The strongSwan VPN suite uses the native IPsec stack in the standard Linux kernel. It supports both the IKEv1 and IKEv2 protocols. . This plugin provides an interface which allows NetworkManager to configure and control the IKEv2 daemon directly through D-Bus. It is designed to work in conjunction with the network-manager-strongswan package, providing a simple graphical frontend to configure IPsec based VPNs.
Homepage: http://www.strongswan.org
Version: 5.6.2-1ubuntu2
Section: universe/net